228870 has 24 divisors (see below), whose sum is σ = 595296. Its totient is φ = 61008.

The previous prime is 228869. The next prime is 228881. The reversal of 228870 is 78822.

It is a Smith number, since the sum of its digits (27) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 228870.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1182 + ... + 1361.

It is an arithmetic number, because the mean of its divisors is an integer number (24804).

2²²⁸⁸⁷⁰ is an apocalyptic number.

228870 is an abundant number, since it is smaller than the sum of its proper divisors (366426).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

228870 is a wasteful number, since it uses less digits than its factorization.

228870 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2556 (or 2553 counting only the distinct ones).

The product of its (nonzero) digits is 1792, while the sum is 27.

The square root of 228870 is about 478.4035953042. The cubic root of 228870 is about 61.1687524707.

The spelling of 228870 in words is "two hundred twenty-eight thousand, eight hundred seventy".